Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4610306 | Non-retarding fluid loss additives for well cementing compositions | Ray S. Pace, Lee F. McKenzie | 1986-09-09 |
| 4602685 | Non-retarding fluid loss additives for well cementing compositions | Lee F. McKenzie, Paul McElfresh | 1986-07-29 |